Filter for deep hypothermia refrigeration

Abstract

The utility model provides a filter for deep hypothermia refrigeration, which comprises a shell, a first filter screen, a second filter screen and a third filter screen are sequentially arranged in the shell from top to bottom, the first filter screen, the second filter screen and the third filter screen are all connected with the shell, and metal fibers are filled between the first filter screen and the second filter screen. The metal fibers are connected with the first filter screen, the second filter screen and the shell, a liquid inlet pipe is arranged between the second filter screen and the third filter screen, and the liquid inlet pipe is communicated with the shell. Refrigerant entering the shell is sprayed out in a specific direction through the inclined opening of the liquid inlet pipe, downward rotating force is formed by impacting the inner wall of the shell, so that liquid in the refrigerant is precipitated to the bottom of the shell as much as possible, the liquid in the refrigerant, particularly oil in the refrigerant, can be filtered through the metal fibers, and the oil in the refrigerant can be filtered through the metal fibers. Therefore, the gas flows to the lower part of the shell as much as possible, and the gas can smoothly reach the upper part of the shell.

Description

Technical Field

[0001] The utility model relates to a filter, in particular to a filter used for deep-cryogenic refrigeration, and belongs to the technical field of filters. Background Art

[0002] The main purpose of refrigeration is to reduce the temperature of an object to a specific temperature or temperature range. The refrigeration filter is an important component in the refrigeration system. Its main function is to filter impurities and pollutants in the system to ensure the cleanliness and efficient operation of the refrigerant. The refrigerant usually contains two states, liquid and gas. In the prior art, the refrigeration filter has a slow separation speed for gas-liquid in the refrigerant, which can easily lead to a decrease in the efficiency of the refrigeration system or failure. Utility Model Content

[0003] Based on the above background, the purpose of the utility model is to provide a filter for deep low temperature refrigeration that can efficiently separate gas and liquid in refrigerant and filter and operate stably, so as to solve the problems described in the background technology.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0005] A filter for deep-cryogenic refrigeration comprises a shell, wherein a first filter screen, a second filter screen and a third filter screen are arranged in sequence from top to bottom inside the shell, the first filter screen, the second filter screen and the third filter screen are all connected to the shell, metal fibers are filled between the first filter screen and the second filter screen, and the metal fibers are all connected to the first filter screen, the second filter screen and the shell, a liquid inlet pipe is arranged between the second filter screen and the third filter screen, the liquid inlet pipe is connected to the shell, one end of the liquid inlet pipe located inside the shell abuts against the inner side of the shell, and the end of the liquid inlet pipe located inside the shell is an inclined opening inclined 45 degrees downward.

[0006] The shell provides a structural support for the filter, ensuring that the first filter screen, the second filter screen, the third filter screen, the metal fiber and the liquid inlet pipe can maintain the correct position and function. The oblique mouth of the liquid inlet pipe can make the refrigerant entering the shell be ejected in a specific direction, and form a rotating downward force by hitting the inner wall of the shell, so that the liquid in the refrigerant is deposited to the bottom of the shell as much as possible. Among them, the metal fiber can filter the liquid in the refrigerant, especially the oil in the refrigerant, so that it flows downward to the shell as much as possible, and at the same time allow the gas to smoothly reach the upper part of the shell.

[0007] Preferably, the first filter screen, the second filter screen and the third filter screen are all 130-150 meshes.

[0008] Preferably, the diameter of the liquid inlet pipe is φ6±0.2 mm.

[0009] Preferably, the liquid inlet pipe and the shell are fixed by welding.

[0010] The liquid inlet pipe and the shell are connected by welding to ensure that the connection between the two is firm and reliable.

[0011] Preferably, a gas outlet is provided at the upper portion of the shell, and the gas outlet is communicated with the shell.

[0012] The gas outlet is communicated with the upper part of the shell, and the gas after being filtered can be easily released to the outside of the shell by reaching the upper part of the shell.

[0013] Preferably, a liquid outlet is provided at the lower portion of the shell, and the liquid outlet is communicated with the shell.

[0014] The liquid outlet is communicated with the lower part of the shell body, so that the liquid precipitated in the shell body can be discharged conveniently.

[0015] Preferably, the shell is provided with a thermal insulation layer, and the thermal insulation layer is connected to the shell.

[0016] The insulation layer reduces heat loss from the filter.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The utility model discloses a filter for deep-cryogenic refrigeration, which uses a shell to provide a structural support for the filter, ensuring that a first filter screen, a second filter screen, a third filter screen, metal fibers and a liquid inlet pipe can maintain correct positions and functions, and the oblique opening of the liquid inlet pipe can make the refrigerant entering the shell spray out in a specific direction, and form a rotating downward force by impacting the inner wall of the shell, so that the liquid in the refrigerant is deposited to the bottom of the shell as much as possible, wherein the metal fibers can filter the liquid in the refrigerant, especially the oil in the refrigerant, so that it flows downward to the shell as much as possible, and at the same time, the gas can smoothly reach the upper part of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the filter used for deep low temperature refrigeration of the utility model;

[0021] Figure 2 The utility model is a schematic diagram of the internal structure of a filter used for deep low temperature refrigeration.

[0022] In the figure: 1, shell; 2, first filter; 3, second filter; 4, third filter; 5, metal fiber; 6, liquid inlet pipe; 7, oblique mouth; 8, gas outlet; 9, liquid outlet. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0024] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0025] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0026] like Figure 1 and Figure 2 As shown, a filter for deep low temperature refrigeration includes a housing 1, a heat insulation layer is provided on the housing 1, and the heat insulation layer is connected to the housing 1. The insulation layer can reduce the heat loss of the filter. A first filter screen 2, a second filter screen 3 and a third filter screen 4 are arranged in sequence from top to bottom inside the housing 1, and the first filter screen 2, the second filter screen 3 and the third filter screen 4 are all connected to the housing 1, and the first filter screen 2, the second filter screen 3 and the third filter screen 4 are all 130-150 meshes. Metal fibers 5 are filled between the first filter screen 2 and the second filter screen 3, and the metal fibers 5 are all connected to the first filter screen 2, the second filter screen 3 and the housing 1. A liquid inlet pipe 6 is arranged between the second filter screen 3 and the third filter screen 4, and the liquid inlet pipe 6 is connected to the housing 1, and the liquid inlet pipe 6 is fixed to the housing 1 by welding. The liquid inlet pipe 6 and the housing 1 are connected by welding to ensure that the connection between the two is firm and reliable. The diameter of the liquid inlet pipe 6 is φ6±0.2mm. One end of the liquid inlet pipe 6 located inside the shell 1 abuts against the inner side of the shell 1 , and the one end of the liquid inlet pipe 6 located inside the shell 1 is an inclined opening 7 inclined downward at 45 degrees.

[0027] The shell 1 provides a structural support for the filter, ensuring that the first filter screen 2, the second filter screen 3, the third filter screen 4, the metal fiber 5 and the liquid inlet pipe 6 can maintain the correct position and function. The oblique mouth 7 of the liquid inlet pipe 6 can make the refrigerant entering the shell 1 spray out in a specific direction, and form a rotating downward force by hitting the inner wall of the shell 1, so that the liquid in the refrigerant is deposited to the bottom of the shell 1 as much as possible. Among them, the metal fiber 5 can filter the liquid in the refrigerant, especially the oil in the refrigerant, so that it flows downward to the shell 1 as much as possible, and at the same time, the gas can smoothly reach the upper part of the shell 1.

[0028] A gas outlet 8 is provided at the upper part of the housing 1, and the gas outlet 8 is connected to the housing 1. The gas outlet 8 is connected to the upper part of the housing 1, and the gas that reaches the upper part of the housing 1 and is filtered can be easily released to the outside of the housing 1. A liquid outlet 9 is provided at the lower part of the housing 1, and the liquid outlet 9 is connected to the housing 1. The liquid outlet 9 is connected to the lower part of the housing 1, and the liquid precipitated in the housing 1 can be easily discharged.

[0029] The implementation principle of the filter used for deep low temperature refrigeration in the utility model is:

[0030] The refrigerant enters the shell 1 along the liquid inlet pipe 6. Since one end of the liquid inlet pipe 6 is located inside the shell 1 and abuts against the inner side of the shell 1, and the end has an oblique opening 7, the refrigerant can be ejected in a specific direction after entering the shell 1, and a rotating downward force is formed by hitting the inner wall of the shell 1, so that the liquid in the refrigerant is deposited to the bottom of the shell 1 as much as possible, and the metal fiber 5 filters the liquid in the refrigerant, especially the oil in the refrigerant, so that it flows downward to the shell 1 as much as possible, and at the same time, the gas can smoothly reach the upper part of the shell 1 and flow out from the gas outlet 8 at the upper part of the shell 1.

[0031] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A filter for cryogenic refrigeration, characterized in that: The filter for deep-cryogenic refrigeration comprises a shell (1), wherein a first filter screen (2), a second filter screen (3) and a third filter screen (4) are arranged in sequence from top to bottom inside the shell (1), wherein the first filter screen (2), the second filter screen (3) and the third filter screen (4) are all connected to the shell (1), metal fibers (5) are filled between the first filter screen (2) and the second filter screen (3), wherein the metal fibers (5) are all connected to the first filter screen (2), the second filter screen (3) and the shell (1), and a liquid inlet pipe (6) is arranged between the second filter screen (3) and the third filter screen (4), wherein the liquid inlet pipe (6) is in communication with the shell (1), wherein one end of the liquid inlet pipe (6) located inside the shell (1) abuts against the inner side of the shell (1), and one end of the liquid inlet pipe (6) located inside the shell (1) is an inclined opening (7) inclined downward at 45 degrees.

2. The filter for cryogenic refrigeration according to claim 1, characterized in that: The first filter screen (2), the second filter screen (3) and the third filter screen (4) are all 130-150 meshes.

3. The filter for cryogenic refrigeration according to claim 1, characterized in that: The diameter of the liquid inlet pipe (6) is φ6±0.2 mm.

4. The filter for cryogenic refrigeration according to claim 1, characterized in that: The liquid inlet pipe (6) and the housing (1) are fixed by welding.

5. The filter for cryogenic refrigeration according to claim 4, characterized in that: A gas outlet (8) is provided on the upper portion of the shell (1), and the gas outlet (8) is in communication with the shell (1).

6. The filter for cryogenic refrigeration according to claim 4, characterized in that: A liquid outlet (9) is provided at the lower part of the shell (1), and the liquid outlet (9) is communicated with the shell (1).

7. The filter for cryogenic refrigeration according to claim 4, characterized in that: The shell (1) is provided with a heat insulation layer, and the heat insulation layer is connected to the shell (1).

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